Ontario Geological Survey
Permanent Link to this Record:
MDI42C08SE00069
| Record Name(s) | Emily Iron Range - 1925, Dog Lake Anomaly - 1958 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Jan-08 |
| Date Last Modified | 2022-Nov-02 |
| Created By | |
| Revised By |
Primary Commodities: Iron
Township or Area: Riggs
Latitude: 48° 19' 28.98" Longitude: -84° 10' 51.7"
UTM Zone: 16 Easting: 708950 Northing: 5356233 UTM Datum: NAD83
Resident Geologist District: Sault Ste. Marie
NTS Grid: 42C08SE
Point Location Description: Narrow bands of iron formation on west side of narrows on Dog Lake
Location Method: Other Literature
Access Description: The site is accessible by boat from the town of Missanabie.
1958: Algoma Ore Properties - airborne geophysics, ground geophysics, mapping, 2 ddh. 1976: R. Campbell - trenching, stripping. 1980-81: Noranda Exploration Co. Ltd. - ground geophysics. 1987-88: Cominco Ltd. - ground geophysics, 1 ddh (298 ft).
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.11360 | 42C08SE0648 | 42C08SE0648 |
| WP Riggs.9/2.10259 | 42C08SE0604 | 42C08SE0604 |
| WP Riggs.29 | 42C08SE0646 | 42C08SE0646 |
| Riggs 0024/ | 42C08SE0682 | 42C08SE0682 |
| Riggs 0013C1/2.4069 | 42C08SE0662 | 42C08SE0662 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Michipicoten
Geological Age: Archean
Sep 23, 2016 (A Wilson) - The Dog Lake Deformation Zone (DLDZ) is located in the central part of Riggs and West townships, where it is defined by a 1.5 to 2.0 km wide southeast-trending zone of moderately to strongly strained rocks. The DLDZ is characterized by both ductile and brittle-ductile shear zones which occur in two dominant orientations 90-100 degrees and 110-120 degrees. Shear zones at these orientations within the mafic to intermediate metavolcanic rocks are defined by 1 to 50 m of chlorite-calcite and, rarely, chlorite-iron carbonate schists. Shear zones within feldspar and quartz-feldspar-porphyry intrusions are defined by quartz-sericite schist. Narrow NE and NW trending brittle and brittle-ductile shear zones are also observed with the DLDZ.
| Rock Type | Rank | Composition | Texture | Relationship | Oxide Ironstone | 1 | Oxide-Facies | Host |
|---|---|---|---|---|
| Intermediate Tuff | 2 | Tuff | Near |
Dec 07, 2005 (A Wilson) - The iron formation is described as consisting of thin and discontinuous bands of magnetite and silica within intermediate to mafic metavolcanic rocks.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Magnetite | Economic | Ore | ||||
| 1 | Pyrite | Economic | Gangue | ||||
| 2 | Pyrrhotite | Economic | Gangue |
Dec 07, 2005 (A Wilson) - Drill logs indicate up to 20% magnetite in the iron formation and locally up to 25% pyrite and pyrrhotite over short widths in both the iron formation and the graphitic slate.
| Rank | Classification |
|---|---|
| 1 | Sedimentary |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Regular | 91 | 1.5 | 90 |
File - Resident Geologist files WP Riggs-64
Publication Number: Date:
Author:
Publisher Name:
Location: SSM RGP office
Folio - Riggs Township, District of Algoma
Publication Number: GDIF292 Date: 1997
Author: Sault Ste Marie RGO
Publisher Name: Ontario Geological Survey
Location:
Map - Michipicoten area, compilation sheet, District of Algoma
Publication Number: P0184 Scale: 1:126,720 Date: 1997
Author: Goodwin A.M.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Geological compilation series, Wawa sheet, districts of Algoma and Sudbury
Publication Number: P0640 Scale: 1:126,720 Date: 1997
Author: Leahy E.J., Rupert R.J., Giblin P.E., Giguere J.F.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
Part - Geology of Township 47 [Riggs Township], Missinaibi area
Publication Number: ARV54-04 Page: 7 Date: 1997
Author: Bruce E.L.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Geological series, Missanabie area, Riggs Township, formerly Township 47, District of Algoma
Publication Number: P0944 Scale: 1:15,840 Date: 1974
Author: Srivastava P., Bennett G., Elmhirst F., Andrews M.D.
Publisher Name: Ontario Division of Mines
Location:
Map - Riggs and West townships, Algoma District
Publication Number: M2353 Scale: 1:31,680 Date: 1977
Author: Srivastava P., Bennett G., Elmhirst F., Andrews M.D.
Publisher Name: Ontario Geological Survey
Location:
Mono - Iron deposits of Ontario
Publication Number: MDC011 Page: 90 Date: 1968
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Township 47 [Riggs Township], District of Algoma, Ontario
Publication Number: M1946-02 Scale: 1:31,680 Date: 1998
Author: Bruce E.L.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Goudreau-Lochalsh area, District of Algoma, Ontario
Publication Number: ARM36B Scale: 1:63,360 Date: 1998
Author: Gledhill T.L., Collins W.H., Thomson E.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Geology of Riggs and West townships, District of Algoma
Publication Number: R174 Page: 39 Date: 1978
Author: Srivastava P., Bennett G.
Publisher Name: Ontario Geological Survey
Location:
Article - The geological and structural setting of gold mineralization in the Missanabie-Renabie District of the Michipicoten greenstone belt, Wawa, Ontario
Publication Number: MP141.037 Page: 257-270 Date: 1997
Author: Heather K.B., Buck S.
Publisher Name: Ontario Geological Survey
Location:
Mono - Wawa mineral deposits data base
Publication Number: OFR5775 Page: 325 Date: 1991
Author: Frey E.D., Stewart R.C.
Publisher Name: Ontario Geological Survey
Location:
Book - Sudbury Timmins Algoma Mineral Program, Project 1: mineral inventory of the Sudbury-Timmins-Sault Ste. Marie region, Ontario
Publication Number: GSC OF 1087 Page: 42C - 160 Date: 1985
Author: Rose, D. G.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/129999
Publication - Michipicoten Iron Ranges; Geological Survey of Canada, Memoir 147
Publication Number: GSC Memoir 147 Page: 155 Date: 1926
Author: Collins, W H; Quirke, T T; Thomson, E
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/100849
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